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问题 填空题

归纳是学习的重要方法，小红在复习盐酸的性质时，归纳出盐酸的五条化学性质。

（1）为了验证性质①，小红将紫色石蕊溶液滴加到盐酸溶液中，溶液变_________色。

（2）图中A所表示的物质类别是___________ 。

（3）盐酸的性质③决定了盐酸可用于清除铁锈，该反应的化学方程式是____________ 。

（4）为了验证性质⑤，可选用的物质是__________ （填一种即可）。

（5）镁和锌可以用来验证盐酸的性质②，小红要探究镁和锌与盐酸反应的快慢，需要控制不变（相同）的量_________（填序号）。

A．两种金属的形状    B．盐酸的质量分数     C．反应容器的大小    D．温度

答案

（1）红  

（2）碱  

（3）Fe2O3+6HCl=2FeCl3+3H2O

（4）Na2CO3（合理即可）  

（5）ABD

完形填空

在空白处填入适当的内容或括号内单词的正确形式（不多于3个单词）。

A new word has suddenly become wildly popular in China---“tuhao” --- ___小题1:___ loosely translated means “nouveau riche (new rich).” There ___小题2:___ (be) more than 100 million references to the word “tuhao” on social media since early September this year.

It's being used to describe ___小题3:___ from the new People's Daily building, to expensive celebrity weddings full of bling-bling （惹人注目的昂贵首饰）, and the new gold-coloured iPhone.

In Chinese “tu” means earth, and “hao” means rich. To say someone is a tuhao is to imply they come ___小题4:___ a poor peasant background, and have made it rich quick, but don't quite have the manners, or taste to go along with it. It's ___小题5:___ the term “nouveau riche”, but has even more negative meaning, suggesting a certain vulgarity(庸俗).

This new usage of the term took off in September after a widely-shared joke about a rich, but ___小题6:___ (happy) man. He goes to a Buddhist monk for advice and expects to ___小题7:___ (tell) to live a more simple life. But the monk replies instead with the phrase: "Tuhao, let's be friends!"

Chinese Internet users are highly ___小题8:___ (create) in their use of language, and are constantly inventing, and re-inventing words for better expressions of some social phenomena. In this case, the popularity of the word “tuhao” seems to reflect the fact ___小题9:___ , in current Chinese society, many people laugh at ___小题10:___ with wealth, but are secretly jealous.
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单项选择题

激光痕在钻石中往往呈现（）的痕迹

A.管状

B.漏斗状

C.三角形状

D.A或B
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